Lithographed sheets III, IV and IX from Rowland Hill's printed specification 1835 No.6762 Lithographed sheets III
Reduced scale photographic reproduction of patent specification no.3887 of 1815, showing Dodd's and Stephenson's locomotive improvements Reduced scale photographic reproduction of patent specification no.3887 of 1815
Reduced scale photographic copy of patent specification no.4067 of 1816 showing Losh and Stephenson's locomotive, wheel, and rail improvements Copy of patent specification no.4067 of 1816 showing Losh and Stephenson's improvements
